gcc-4.9/gcc/testsuite/gcc.dg/pr23049.c


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/* This was an ICE in fold where we tried to fold something like,

     a = 0 == 0 ? 0 : 3988292384

   after doing if-conversion for the vectorizer.  Folding "0 == 0"
   should have been done before calling fold on the whole rhs of
   the above expression.  */

/* { dg-do compile } */
/* { dg-require-effective-target int32plus } */
/* { dg-options "-O3 -ftree-vectorize" } */

static unsigned short int crc_table[256];
void AC3_encode_init(void)
{
  unsigned int c, n, k;
  for(n=0;  n<256; n++)
  {
    c = n << 8;
    for (k = 0; k < 8; k++)
    {
      if (c & (1 << 15))
       c = ((c << 1) & 0xffff) ^ (((1 << 0) | (1 << 2) | (1 << 15) | (1 << 16)) & 0xffff);
    }
    crc_table[n] = c;
  }
}